Fountain stencil brush



March 18, 1941. M. B. WRIGHT FOUNTAIN STENCIL BRUSH Filed Nov. 25, 1938 Jun ATTORNEYS mmyzwm Patented Mar. 18, 1941 PATENT DFFICE FOUNTAIN STENCIL BRUSH Milton B. Wright, St. Petersburg, Fla., assignor to Universal Fountain Brush Company, Inc., a corporation of Florida.

Application November 25, 1938, Serial No. 2,422,369

4 Claims.

The present invention relates to new and improved fountain brushes and more'particularly to stencil brushes used for marking packing cases and the like with a stencil.

. The primary object of the invention resides in the provision of a readily detachable brush end or tip for fountain brushes whereby as the bristles exhibit signs of wear andtear new tips can be inserted.

A further object of the invention is to provide a new and novel means for detachably connecting a brush end or tip to fountain brushes thereby making it possible to use several different size diameter brush tips with a single fountain handle.

Another object of the invention is to provide in fountain brushes an improved structure whereby the bristles of the brush that are normally set in. solid vulcanized rubber are prevented from turning and at the same time permitting an uninterrupted flow of liquid such as ink or paint in the bristles.

The invention will be fully and ccmprehensively understood from a consideration of the following detailed description when read in connection with the accompanying drawing which forms a part of the application.

In the drawing:

Figure 1 is an elevational view of the fountain brush with certain parts thereof in section;

Figure 2 is a sectional view taken substantially on line 2--2. of Figure 1;

Figure 31s a sectional view taken substantially on line 3--3 of Figure 1;

Figure 4. is a perspective view of a specially constructed stem for attaching the brush head to the fountain handle; and

Figure 5 is a sectional view taken substantially on line 5-5 of Figure 1.

The present invention may be considered as an improvement of Patent Number 1,348,681, granted August 3, 1920, and a co-pending application, Serial Number 113,903, filed December 2, 1936, now matured into Patent No. 2,164,6J, June 27, 1939. Generally stated the device con sists of a reservoir handle attached to a brush structure, the bristles of the brush surrounding a uniquely formed wedge having means for firmly attaching the bristles thereto. The wedge has a passageway extending therethrough for supplying liquid such as ink, paint or the like to the bristles of the brush, which liquid will flow from the reservoir handle to which said wedge is coupled.

Referring to the drawing for a more detailed description thereofythe device includes a hollow reservoir handle Ill adapted to contain a liquid such as ink or paint. The open end of the handie is interiorly threaded at H for attachment to the cap I2. The end of the cap projecting within the handle is recessed as indicated at It and in the recessed portion-is formed a plu rality of spaced outlets M through which the paint or ink contained within the handle H3 is fed to the brush. The outer end of the cap is reduced in thickness and is formed with exterior threads It for a purpose to be hereinafter described. The surface within the opening l6 formed within the reduced end is relatively smooth but is adapted to receive the threaded end ll of the attaching wedge l9 hereinafter termed a stem.

The cap I2 is preferably formed of brass or similar material and in. the manufacture thereof, the opening it is formed so as to include a convex seat [9 and the outlets it are spaced therearound. The convex seat is in conjunction with the concave end 253 of the stem it] acts as a valve for controlling the flow of ink or the like from the fountain handle into the bristles i'iil of the brush head indicated generally by the numeral 2].

The brush head 2| includes an annular metallic ring 33 and circular backing plate 29.

The bristles 2B of the brush are preferably set i in vulcanized rubber and surround the square shaped member 23 of the stem it. One end M of the annular ring 33 is crimped to form the ferrule which causes the bristles to flare outwardly. The other end of the annular ring is turned over as indicated at to press against the plate 29. This is accomplished during the fabrication of the brush head.

The brush head 21 is detachably secured to the fountain handle ill by means of the stem l8. Referring to Figure 4 of the drawing, it will be noted that one end 22 of the stem is is substantially cylindrical shaped and the other end 23' is substantially square shaped, and the square shaped end is formed with a plurality of slots 24 and a second slot 25, which slot is formed at the juncture of the square and rounded portion of the stern N3, the purpose of which will be hereinafter described. The rounded portion 22 is partially threaded as indicated at 23 for receiving the packing cap The packing cap 25 is constructed substantially as illustrated in Figure l of the drawing and is formed with interior threads 26 and 21, the threads it cooperating with the threads 23 of the stem 18 and the threads 27 cooperating with the threaded end l of the cap I2 to lock the head thereto. The cap 25 has means for receiving a suitable packing 28 thereby preventing any leakage of the liquid about the connection.

As illustrated in Figure 4 of the drawing, the stem I8 is formed from a single strip of suitable material such as brass or the like and the squared end thereof is adapted to be firmly vulcanized within the bristles of the brush. In the fabrication of the brush head 2| the circular metal back plate 29 is slipped over the squared end of the stem until it rests upon the slot 25'. As illustrated in Figure 2 of the drawing, the plate 29 is formed with a square opening 30 which is of substantially the same size as the notch 25'. After the plate 29 has been positioned in the slot 25' it is then turned bringing the square hole cornerwise under the corners 3| formed by notching the squared end of the stem. The metal plate is then firmly held on the stem and the entire assembly is inserted into the center of the bristles 20 until the metal plate rests against the back portion 32 of said bristles. The annular ring 33 effectively holds the bristles in position. The entire structure is then inserted into a special guide mounted on a power press and crimped solidly to gether. The crimping turns in the ferrule 34 of the annular ring 33 and the opposite edge thereof is turned over as indicated at 35 against the plate 29 thereby locking it securely and by continuing pressure at the outside edge of the plate 29 it will firmly hold the squared end in locked position under the corners of the slot 25. It is understood, of course, that the portion of the bristles retained within the annular ring 33 have been previously dipped in rubber so that vulcanizing the pressed assembly will fuse all parts into a substantially unitary construction. The rubber used is in fluid form when applied to the bristles and a certain amount thereof will be caused to be deposited in the slots 24 and will harden therein during vulcanization. Thus it will be seen that the bristles are materially strengthened for resistance against up and down pull and strain. Furthermore, the squared end of the stem being embedded solidily in the vulcanized rubber will be prevented from twisting.

The stem 18 is formed with a passageway 36, the upper end of which communicates with the openings I4 for permitting the liquid to flow into the central bristles of the brush and be distributed therefrom.

A tension spring 31 surrounds the stem l8 and contacts the plate 29 and packing nut 25 and is provided to maintain the position of the valve setting for proper flow of the liquid.

From the above description it will be readily apparent that the removable brush head includes the stem I8, and the bristles mounted as herein above described. When attaching the head to the fountain handle It], the concave end of the stem is first inserted within the opening N5 of the cap I2. The threads 21 of the cap 25 will then engage the threads l5 of the cap l2 to tighten the head to said cap l2. The interiorly formed threads 26 form a bearing by which the brush head is turned to the right or left to open or shut the valve regulating the fiow of ink.

The valve arrangement comprising the convex and concave ends l9 and 20, respectively, controls the flow of liquid from the fountain handle into the brush head. Grasping the annular ring 33 between the thumb and forefinger and turning the same to right or left will seat or unseat the concave end from the convex end thereby controlling the flow of liquid. After the flow has been adjusted, the spring 31 will hold the respective seats in set position.

A substantially square shaped cap 38 is positioned over the closed end of the fountain handle Ill and is frictionally held thereon. The cap 38 will prevent the brush from rolling when placed in a horizontal position and will also protect the handle in the event that it is dropped or otherwise abused. The cap being substantially flat on the outer portion thereof and substantially larger in diameter than the handle II], will also serve to permit the device to be stood up on end with little possibility of its tipping over.

Also it will be understood, of course, by those skilled in the art that variations in the hereinabove described device involving the substitution of substantial equivalents for the devices described are intended to be comprehended within the spirit of the present invention and that the invention is capable of extended application and is not confined to the exact showing of the drawing nor to the precise construction described and, therefore such changes and modifications may be made therein as do not affect the spirit of the invention nor exceed the scope thereof as expressed in the appended claims.

What is claimed is:

l. A fountain brush comprising in combination, a reservoir handle, a cap forming a removable closure for said handle and including means for dispensing the contents thereof, a stem secured to said cap and having a passageway extending therethrough, one end of said stem being substantially cylindrical shaped and the other end substantially square shaped in cross-section, a brush head secured to the square shaped end of said stem and including an annular ring surrounding the bristles of the brush, said square shaped end being formed with a plurality of slots whereby the bristles of the brush are firmly secured to said stem, a circular plate carried by a notch formed in the juncture of the rounded and square shaped ends, respectively, said plate forming a backing strip for bristles mounted within said ring.

2. A fountain brush comprising in combination, a reservoir handle, a cap forming a removable closure for said handle and including means for dispensing the contents thereof, said cap being formed with a hollow reduced exteriorly threaded end, a stem carried by the hollow reduced end of said cap and having a passageway extending therethrough, means for attaching said stem to said cap, the end of said stem carried by said cap being substantially cylindrical-shaped and the other end substantially square-shaped, a brush head attached to the square-shaped end of said stem and including an annular ring surrounding the bristles of the brush, a circular plate forming a backing strip for the bristles mounted within said ring, and means on the square-shaped end of said stem for receiving and locking said circular plate.

3. A removable head for fountain brushes comprising an annular ring for retaining a portion of the bristles of the brush, a circular plate mounted within said ring and forming a backing strip for the bristles, a stem disposed substantially centrally of said circular plate, one end thereof being substantially cylindrical shaped and the other end substantially square shaped in cross-section, said stem formed with a notch at the juncture of said cylindrical and square-shaped ends for securing 7 said plate thereto, and means for securing the square shaped end within the bristles.

4. A fountain brush comprising in combination,

a reservoir handle, a cap forming a removable closure for said handle and including means for dispensing the contents thereof, the outer end of said cap being reduced in thickness and formed with exterior threads, a stem having one end disposed within said cap and formed with a passageway extending therethrough, one end of said stem being substantially cylindrical-shaped and the other end substantially square-shaped in cross section, the cylindrical-shaped end being exteriorly threaded, a brush head secured to the square-shaped end of said stem and including an annular ring surrounding the bristles of the brush, means on the square-shaped end of said stern for receiving and locking a circular plate, said plate forming a backing strip for bristles mounted within said ring, and a packing cap formed with interior threads for engagement with the exterior threads of said stem and said cap for locking said brush head to said handle while permitting adjustment of said stem to dispense the contents of said handle.

MILTON B. WRIGHT. 

